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30.05.2021 3:43:50
Cooling System Kit Front Mount Block Only LT-1 No V-drive here
See full version: Closed Cooling Systems - Complete Closed Cooling Kits
Cooling System Kit Front Mount Block Only LT-1 No V-drive here
NOTE: Please have Year, Engine Size, Engine Model and Serial Number available when ordering or making inquiries on this closed cooling system
NOTE: Please have Year, Engine Size, Engine Model and Serial Number available when ordering or making inquiries on this closed cooling system more
Cooling System Kit Front Mount Full System 30 GPM raw water needed more
Sometimes attached to the heat exchanger itself, sometimes mounted remotely, this tank is a very important part of a closed cooling system. As the engines water coolant gets hot it will expand, increasing in volume. This water needs somewhere to go and the expansion tank is a tank that provides room for this hot water to expaned into. We carry a couple stock replacement expansion tanks here. here
Marine Closed "Freshwater" Cooling systems is a bit of a misnomer as they do not actually circulate freshwater but an antifreeze/water mixture. Unlike in a car where the antifreeze/water circulates through an air-cooled radiator, a closed cooling system uses lake or ocean water flowing through a heat exchanger to remove heat from the engines cooling water/antifreeze mixture.
The heat exchanger is the heart of the closed cooling system. It uses raw lake or ocean water brought in from the raw water pump to act as coolant for the engines circulating water. The circulating water runs in a closed loop through the engine only in a half system and in a full system, the exhaust manifold as well. The heat exchanger acts as a radiator does in an automobile, however rather than air the raw water is used for cooling the circulating water. The raw water is brought in an pumped through several small tubes inside the heat exchanger, this tubes will absorb and exchange the heat from the circulating water surrounding them and will exit the heat exchanger towards the exhaust risers to be dumped overboard. The hot circulating water runs thru the heat exchanger on different lines exchanging its heat thru the cooling tubes and exiting the heat exchanger back towards the circulating pump and the block. We carry a number of replacement heat exchanger tanks for a variety of stock applications: more
The half closed cooling system is designed to circulate cooling water through the block only. As shown in the diagram below, raw water is picked up through the drive pickup or through a hull mounted pickup, if present it will pass through a sea strainer to clean debris out of the water. From there it will pass through the raw water pump. The raw water will be used with your Engine Oil and Power Steering Coolers as they will not be part of the closed circulating system. From Here the raw water will be passed into the heat exchanger tank and be pumped through many small tubes where it will exchange heat from the circulating systems water. The raw water then exits the heat exchanger to go through the manifold, into the riser and then exit the boat. As for the circulating water in closed cooling system, cool water will enter the engine through the circulating pump and circulate through the engine. Hot water will exit at the water outlet on top of the manifold and head to the heat exchanger to exchange the heat it's carrying with the raw water. After the exchange the cool circulating water exits the heat exchanger and returns to circulating pump to begin another loop. See below for a diagram of the half system operation: more
The full closed cooling system is designed to circulate cooling water through the block and exhaust maniolds. As shown in the diagram below, raw water is picked up through the drive pickup or through a hull mounted pickup, if present it will pass through a sea strainer to clean debris out of the water. From there it will pass through the raw water pump. The raw water will be used with your Engine Oil and Power Steering Coolers as they will not be part of the closed circulating system. From Here the raw water will be passed into the heat exchanger tank and be pumped through many small tubes where it will exchange heat from the circulating systems water. The raw water then exits the heat exchanger to go directly into the risers and then exit the boat. The exhaust manifold and riser will be blocked off, so no water will transfer between them. As for the circulating water in closed cooling system, cool water will enter the engine through the circulating pump and circulate through the engine. The water will heat up in the engine and the warm water will exit at the water outlet on top of the manifold and head to the manifolds. After circulating through the manifolds, the hot water will head to the heat exchanger to exchange the heat it's carrying with the raw water. After the exchange the cool circulating water exits the heat exchanger and returns to circulating pump to begin another loop. See below for a diagram of the full system operation:
I converted mine to closed cooling but I am in salt water. Yes AF is slightly acidic and released scale and rust, but since you are in fresh water you probably don't have much. Another benefit is that I could run a higher temp (160deg) thermostat instead of the 143 and the engine will run more efficiently. Maybe in fresh water you can run a 160 with raw water though. Also, the potential for shock cooling (say after raw water pickup clog is cleared) is eliminated as the exchanger acts as a buffer. more
The decision for salt water use is easy, for fresh water it's a toss up IMO. here
FULL SYSTEMS COOL THE BLOCK AND MANIFOLD. In full systems, the engine block and the exhaust manifolds are included in the antifreeze system. The exhaust elbows, where the Raw-Water exits through the exhaust system, always remain on the Raw-Water side. [links]
Q: I will probably sell my boat before I have any problems, why should I convert to Fresh Water Cooling?
Q: What is the difference between a Fresh Water Cooling System and a Closed Cooling System?
A: There is no reason why it should. There is nothing in a PPT/MONITOR Fresh Water Cooling system that can do harm to the engine as long as the system is functioning normally. Because of our engineered high performance design, our systems have a very high cooling safety margin.
Q: What is Fresh-Water Cooling?
A: It is the marine version of the cooling system in your car. Most marine engines are converted from a non-marine engine that was designed to have clean non-corrosive antifreeze coolant circulating between the engine and a "radiator". The marine version of this cooling system is called Fresh-Water Cooling, and the radiator is called a Heat Exchanger. Raw (sea) water instead of air passes through the heat exchanger and absorbs the heat from the engine.
Many marine engines use the initially less expensive, Raw-Water-cooling system rather than Fresh Water Cooling. In this case, polluted corrosive seawater is pumped directly into the engine. The Raw-Water eats at the very base of a marine engine causing irreparable damage.
A: Yes, to simplify winterizing, eliminate all corrosion and debris damage, and maintain proper engine temperature. Although lake and river water is not as harmful as seawater, it contains salts, pollutants, mud, sand, and marine organisms, which can be damaging to an engine.